Chemistry, asked by poornitalla2002, 1 year ago

element x has a mass number of 35 and number electrons it has are 18. identify the group and the period number

Answers

Answered by kir2
1
no of electrons = atomic no.
so atomic no=18
electronic configuration=2,8,8
so it belongs to group 18 and period 3

Hope it helps!!

poornitalla2002: thank you
kir2: wlcm
Answered by Electromillet
0
no. of electrons = 18
e.c. = 2,8,8
so period no. = 3 (3 shells)
group no. = 18 (8 valence electrons)
so it is argon
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